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Methodology and usage - IOP

Date published: 11 December 2018

Statistics: Business, economy and trade,  IOP supplementary information

The NI Index of Production is designed and maintained to meet the requirements of a wide variety of users.

A summary of these uses can be accessed by clicking on the document below. Methodological notes are also provided.

Documents

  • IOP Background Information Adobe PDF (204 KB)
  • Methodology for the NI Index of Production (IOP) Adobe PDF (527 KB)
  • Changes to NI IOP estimates as a result of moving to X-13 ARIMA SEATS for seasonal adjustment affecting Q2 2014 Adobe PDF (362 KB)
  • Changes to Regional GVA estimates affecting Q3 2013 IOP index onwards, including back series Adobe PDF (363 KB)
  • Summary of usage for NI Index of Production Adobe PDF (599 KB)

Help viewing documents

Last updated: 03 March 2025

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